by Prof. Dr. Sondang P. Siagian, M.P.A $7.00
by Drs. Sudarsono, S.H., M.Si $7.00
by Soesilo Zauhar $6.00
by Joseph Jan $6.00
by Drs. Daryanto $7.00
by Sagimun MD $6.00
by Pipiet Senja $6.00